[INFO] cloning repository https://github.com/undergg/anagram-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/undergg/anagram-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundergg%2Fanagram-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundergg%2Fanagram-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4f129a3187dff16c12ef9a090b68d7ee317190c
[INFO] checking undergg/anagram-solver against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundergg%2Fanagram-solver" "/workspace/builds/worker-62/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-62/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/undergg/anagram-solver on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/undergg/anagram-solver
[INFO] finished tweaking git repo https://github.com/undergg/anagram-solver
[INFO] tweaked toml for git repo https://github.com/undergg/anagram-solver written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] crate git repo https://github.com/undergg/anagram-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 987187db37a50113259547e09156370f6572db91b4db258577ef6e63e33858a6
[INFO] running `Command { std: "docker" "start" "-a" "987187db37a50113259547e09156370f6572db91b4db258577ef6e63e33858a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "987187db37a50113259547e09156370f6572db91b4db258577ef6e63e33858a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "987187db37a50113259547e09156370f6572db91b4db258577ef6e63e33858a6", kill_on_drop: false }`
[INFO] [stdout] 987187db37a50113259547e09156370f6572db91b4db258577ef6e63e33858a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c14eafb008f3920800c714d95b3f93ef2f77e487ae7e54cf2cd8003c73a09f45
[INFO] running `Command { std: "docker" "start" "-a" "c14eafb008f3920800c714d95b3f93ef2f77e487ae7e54cf2cd8003c73a09f45", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking anagram-solver v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/solver.rs (2 fixes)
[INFO] [stdout] warning: associated function is never used: `delete`
[INFO] [stdout]   --> src/trie.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn delete(&mut self, item: &str) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]   --> src/trie.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn contains(&self, item: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `delete_helper`
[INFO] [stdout]   --> src/trie.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn delete_helper(node: &mut TrieNode, c_iter: &mut Chars, delete_node: &mut bool) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `contains_helper`
[INFO] [stdout]    --> src/trie.rs:150:4
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn contains_helper(node: &TrieNode, c_iter: &mut Chars) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.43s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking anagram-solver v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: associated function is never used: `delete`
[INFO] [stdout]   --> src/trie.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn delete(&mut self, item: &str) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]   --> src/trie.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn contains(&self, item: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `delete_helper`
[INFO] [stdout]   --> src/trie.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn delete_helper(node: &mut TrieNode, c_iter: &mut Chars, delete_node: &mut bool) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `contains_helper`
[INFO] [stdout]    --> src/trie.rs:150:4
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn contains_helper(node: &TrieNode, c_iter: &mut Chars) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "c14eafb008f3920800c714d95b3f93ef2f77e487ae7e54cf2cd8003c73a09f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c14eafb008f3920800c714d95b3f93ef2f77e487ae7e54cf2cd8003c73a09f45", kill_on_drop: false }`
[INFO] [stdout] c14eafb008f3920800c714d95b3f93ef2f77e487ae7e54cf2cd8003c73a09f45